WO2006075277A1 - Procede et appareil de communication multidiffusion dans des reseaux de communication sans fil - Google Patents

Procede et appareil de communication multidiffusion dans des reseaux de communication sans fil Download PDF

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Publication number
WO2006075277A1
WO2006075277A1 PCT/IB2006/050070 IB2006050070W WO2006075277A1 WO 2006075277 A1 WO2006075277 A1 WO 2006075277A1 IB 2006050070 W IB2006050070 W IB 2006050070W WO 2006075277 A1 WO2006075277 A1 WO 2006075277A1
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WO
WIPO (PCT)
Prior art keywords
sender
receiver ues
multicast communication
multicast
communication
Prior art date
Application number
PCT/IB2006/050070
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English (en)
Inventor
Dan Shang
Li Sun
Yonggang Du
Original Assignee
Koninklijke Philips Electronics N.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics N.V. filed Critical Koninklijke Philips Electronics N.V.
Publication of WO2006075277A1 publication Critical patent/WO2006075277A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast

Definitions

  • the present invention relates generally to a communication method and apparatus, and more particularly, to a method and apparatus for multicast communication in wireless communication networks.
  • the conventional one-to-one unicast communication style could not meet customers' requirements.
  • the customer as sender hopes to send same data to multiple receivers, or namely performs multicast communication between a single sender and multiple receivers.
  • the teleconference service which burgeoned in recent years, is a typical application of the multicast communication.
  • a speaker launches his speech other attendants can hear the contents without presence at the meeting site through the communication channel established between the speaker and each of other attendants by a user terminal (for example, fixed-line or mobile phone).
  • a user terminal for example, fixed-line or mobile phone.
  • Ethernet conventional telecommunication networks and conventional wireless communication network can all support multicast communication.
  • Fig. 1 shows the conventional UP-UTRAN-DOWN mode in
  • TD-SCDMA Universal Mobile Telecommunication System
  • UEl and UE2 exchange information through the UTRAN (Universal Mobile Telecommunication System (UMTS) Terrestrial Radio Access Network), which is composed of Base station Transceiver (Node B) and RNC (Radio Network Controller).
  • UTRAN Universal Mobile Telecommunication System
  • Node B Base station Transceiver
  • RNC Radio Network Controller
  • the traffic data have to be relayed by base station no matter how far away between sender UE and each receiver UE.
  • the radio resource will be surely wasted, and also, the transmission of traffic data will be inevitably delayed.
  • P2P peer-to-peer
  • Fig. 2 illustrates the P2P communication mode.
  • the dashed line stands for signaling link while the solid line stands for data link, and the arrow shows the direction of information flow.
  • only signaling link exists between the UTRAN and the UE, while only data link exists between the two communicating UEs.
  • RU resource unit
  • P2P communication can save almost up to 50% radio resource compared with conventional communication mode; In the meantime, since there exists signaling links between UTRAN and UEs, UTRAN is still in control of P2P communication.
  • One object of the present invention is to provide a multicast method in P2P- enabled communication systems, with which the radio resource will be significantly saved and traffic data's transmission delay will be effectively reduced, compared with conventional multicast communication modes.
  • P2P communication mode comprising: receiving a multicast request from a sender UE, which comprises ID information of multiple receiver UEs; determining whether P2P communication direct link between the sender UE and each of the receiver UEs meet requirements for establishing multicast communication, according to the multicast request; assigning corresponding radio resource to the sender UE and each of the receiver UEs if the requirements for establishing multicast communication are met, so that each of the receiver UEs can receive the traffic data from the sender UE.
  • a multicast communication method to be executed by a UE for supporting P2P-enabled communication mode comprising: sending a multicast request to a network system, which contains ID information of multiple receiver UEs; receiving radio resource for multicast communication assigned by the network system according to the multicast request; sending traffic data to each of the receiver UEs via direct links for the P2P communication by utilizing the radio resource.
  • a multicast communication method to be executed by a UE, for supporting Peer-to-Peer communication mode comprising: receiving paging information from a network system according to multicast request from a sender UE; sending response information to the network system, which contains position information of the UE and/or P2P capability indication.
  • a network system for supporting Peer-to-Peer communication mode comprising: a receiving unit, for receiving a multicast request from a sender UE, which comprises ID information of multiple receiver UEs; a determining unit, for determining whether or not direct links for the P2P communication between the sender UE and each of the receiver UEs can meet requirements for multicast communication; an assigning unit, for assigning corresponding radio resource to the sender UE and each of the receiver UEs when the requirements for establishing multicast communication are met, so that each of the receiver UEs can receive traffic data from the sender UE.
  • a UE for supporting Peer-to-Peer communication mode comprising: a sending unit, for sending multicast request to a network system, which comprises ID information of multiple receiver UEs; a receiving unit, for receiving radio resource for multicast communication assigned by the network system according to the multicast request; the sending unit, for sending traffic data to each of the receiver UEs via the direct links for the P2P communication by utilizing the radio resource.
  • Fig. l is a schematic diagram illustrating the conventional communication mode in TD-SCDMA system
  • Fig.2 is a schematic diagram illustrating the P2P communication mode in TD-
  • Fig.3 is a schematic diagram illustrating the multicast communication based on the direct multicast communication mode according to the present invention.
  • Fig.4A and 4B are flowcharts illustrating the direct multicast communication in TD-SCDMA system according to an embodiment of the present invention
  • the P2P-enabled UE since the P2P-enabled UE normally has the multicast capability, if sender UE and multiple receiver UEs are close to each other, following P2P communication mode, traffic data can be conveyed via the direct link for P2P communication between sender UE and each of receiver UEs respectively, so as to save radio resource effectively.
  • Fig. 3 is a schematic diagram illustrating communication network for the multicast communication according to the present invention.
  • each of UEs (UEl, UE2, UE3, and UE4) maintains signaling link with UTRAN respectively, so that
  • UTRAN is still in control of each UE.
  • P2P communication direct links are established between the sender UE (UEl) and each of receiver UEs (UE2, UE3, UE4) respectively.
  • UEl utilizes the same radio resource assigned by UTRAN, which means sending traffic data via each of direct links with the same time slot, same carrier frequency and same spreading code.
  • UTRAN the same radio resource assigned by UTRAN
  • each of UE2, UE3 and UE4 as the receiver, receives the traffic data from UEl via the direct links with UEl by using the corresponding radio resource assigned by UTRAN.
  • the multicast communication method in the present invention shown in Fig. 3 significantly saves radio resource. Besides, due to maintaining the signaling links with each of UEs (UEl, UE2, UE3, and UE4), UTRAN could realize the real-time control upon the undergoing multicast communication.
  • Step SlO when UEl being in idle mode attempts to send traffic data to multiple UEs that are camping in a same cell by way of multicast communication, UEl sends a multicast request to network system UTRAN to initialize a random access procedure (Step SlO)
  • UEl acting as sender UE, can embed the ID information of each of receiver UEs (e.g. UE2, UE3 and UE4) with which UEl attempts to perform multicast communication into the multicast request.
  • the ID information of the UEs may be the receiver UEs' phone number, or other information that can identify each receiver UE.
  • UTRAN After receiving the multicast request, based on the ID information of each receiver UE, UTRAN sends paging messages to UE2, UE3 and UE4 respectively, and circulates the message that UEl attempts to act as sender UE to send traffic data to them by way of multicast communication (Step S20). Assuming that each receiver UE is in idle mode, after receiving the paging message, each of UE2, UE3 and UE4 sends a paging response message to UTRAN and enters connected mode respectively. (Step S30)
  • the paging response message sent by each of receiver UEs comprises the multicast capability indication for indicating whether the receiver UE is able to perform multicast communication (i.e. P2P capability indication).
  • a P2P-enabled UE owns the multicast capability.
  • UTRAN can also acquire the position information of each receiver UE according to the paging response message.
  • the position information could be the information that can be used to estimate the UE position, such as DOA of the paging response signal or the time when the paging response signal arrives at base station.
  • TRAN can also acquire the concrete position of UE by using Global Position System (GPS).
  • GPS Global Position System
  • the procedure of how UTRAN acquires UE's position can be implemented in various ways known in the prior art, and thus the detailed description is omitted here.
  • UTRAN After receiving paging response messages from each receiver UE, UTRAN determines whether the predefined requirements for establishing multicast communication between UEl and each receiver UEs are satisfied according to the multicast capability indication and position information of each receiver UEs, which are contained in each paging response message (Step S40).
  • UTRAN firstly determines whether or not each receiver UE is able to support multicast communication, that is: whether all of UE2, UE3 and UE4 can support multicast communication; next, according to each receiver UE's position information, UTRAN calculates the distance between each of receiver UE (UE2, UE3 and UE4) and UEl respectively so as to further determine if each receiver UE is camping within the P2P communication radio coverage of UEl. Based on the two answers of the above judgments, UTRAN determines whether or not to establish multicast communication between UEl and UE2, UE3, UE4.
  • Step S50 (1) if all receiver UEs support multicast communication and also are camping within the P2P communication radio coverage of UEl, the predefined requirements of multicast communication are satisfied, that is, UTRAN confirms to establish multicast communication between UEl and UE2, UE3, UE4 (Step S50).
  • UTRAN reports the ID information of the part of the receiver UEs (e.g. UE2) to UEl (Step S54).
  • UE After receiving the ID information of the part of the receiver UEs that don't meet the requirements of multicast communication, based on real situation, UE will determine whether or not to continue the multicast communication with other receiver UEs that meet the requirements of multicast communication under the absence of this part of receiver UEs.
  • a UE acting as host, receives a report from network system that guest UE2 can't perform multicast communication, if the absence of UE2 may cause the discussion result of the teleconference invalid, UEl will ask to suspend this multicast communication; however, if UE2 is a unimportant attendant,
  • UEl may decide to continue the multicast communication.
  • Step S58 UEl sends its decision to UTRAN as an indication (Step S58). If receiving the indication to suspend the multicast communication, UTRAN will terminate the operation of this multicast communication (Step SlOOO); whereas receiving the indication to continue the multicast communication, UTRAN will confirm to establish the multicast communication between UEl and the receiver UEs that satisfy the requirements of multicast communication
  • Step SlOOO If all receiver UEs don't support multicast communication, or all receiver UEs are outside the P2P communication radio coverage of UEl, UTRAN will terminate the operation of this multicast communication (Step SlOOO).
  • UTRAN sends ID information of UEl that is acting as sender to each of above receiver UEs that are able to perform multicast communication, such as UE2, UE3, and UE4 in scenario (1), or UE3 and UE4 in scenario (2) (Step S60).
  • each receiver UE After receiving the UEl 's ID information sent from UTRAN, each receiver UE (e.g. UE2, UE3 and UE4) determines whether or not to permit to establish the multicast communication with UEl respectively (Step S70), and also feedbacks the result to UTRAN as an answer (Step S80).
  • UTRAN acquires the information whether or not each receiver UE permits to establish multicast communication with UEl (Step S85).
  • UTRAN will report the ID information of this part of receiver UEs(e.g. UE2) to UEl (Step S94).
  • UEl After receiving ID information of the part of receiver UEs, according to real situation, UEl determines whether or not to continue the multicast communication with other receiver UEs that permit the multicast communication with it (e.g., UE3, and UE4) under the absence of this part of receiver UEs (Step S96), and also sends the decision result to UTRAN as an indication message (Step S98).
  • receiver UEs that permit the multicast communication with it (e.g., UE3, and UE4) under the absence of this part of receiver UEs
  • UTRAN will terminate this multicast communication (Step SlOOO). If receiving the indication to continue the multicast communication, UTRAN will confirm to perform the multicast communication between UEl and other receiver UEs (e.g. UE3 and UE4) that permit multicast communication with UEl.
  • UE3 and UE4 receiver UEs
  • the above ID information of UEl can also be combined with paging message at Step S30 and sent to each receiver UE by UTRAN, so that UTRAN can get the response message from each receiver UEs indicating whether or not they permit multicast communication with UEl.
  • UTRAN will assign radio resource for probing the P2P direct links between UEl and each of receiver UEs to UEl and each of receiver UEs (e.g, UE2, UE3 and UE4 in scenario (i); UE3 and UE4 in scenario (ii)) (Step SlOO).
  • the assigned radio resource includes carrier frequency, receiving/sending time slot and spreading code.
  • Step SIlO Utilizing the assigned radio resource, UEl sends probing signal to each receiver UE via each direct link respectively.
  • Each receiving UE searches the probing signal on assigned radio channel (Step S 130), and determines if it can receive the probing signal from UEl within a predefined period of time (Step S140)
  • the receiver UE If receiving the probing signal within the predefined time period, the receiver UE sends a probing report to UTRAN, which includes the detected performance of the direct link between the receiver UE and UEl (Step S 142); if not receiving the probing signal within the predefined time period, the receiver UE will also send a probing report to UTRAN to indicate it can not receive the probing signal(Step S 144).
  • UTRAN receives the probing reports from each of receiver UEs (Step S 150), and checks if the direct link performance detected by each receiver UE that receives the probing signal can meet the requirements of communication quality(Step S 160).
  • Step S162 the probing report from each receiver UE(e.g., UE2, UE3 and UE4) reveals that part of the direct links' performance doesn't meet the requirements of communication quality (for example, the direct link between UEl and UE2 can not satisfy the communication requirements) or part of the receiver UEs (e.g. UE2) have not received the probing signal within predetermined time period, so part of the direct links can't be used for multicast communication (Step S162) , that is, the probing for some of the direct links fails, UTRAN will report the ID information of the corresponding part of the receiver UEs(e.g., UE2) to UEl (Step S164). Receiving the ID information of the part of the receiver UEs, based on the real situation, UEl determines whether to continue multicast communication via other successfully probed direct link(Step S 166) with absence of this part of the receiver
  • Step S166 UEs(Step S166), and sends the decision to UTRAN as an indication as well (Step S168).
  • UTRAN When receiving the indication to suspend multicast communication, UTRAN will terminate the multicast communication (Step SlOOO); whereas receiving the indication to continue the multicast communication, UTRAN will confirm to perform the multicast communication via the successfully probed direct links.(e.g. the direct link between UEl and UE3, UEl and UE4) (Step S 170)
  • Step SlOOO If the probing report from each receiver UE(e.g., UE2, UE3 and UE4) reveals that the performance of all direct links doesn't meet the requirements of communication quality, and each direct link can not be used for multicast communication, that is, the probing for each direct link fails, UTRAN will then terminate the multicast communication (Step SlOOO).
  • the network assigns the radio resource for multicast communication to the successfully probed direct links.
  • the assigned radio resource includes: carrier frequency, receiving/sending time slot, spreading code.
  • UEl and each receiver UE e.g., UE2, UE3 and UE4 enter multicast communication mode (Step S 180).
  • UEl will send the traffic data modulated by the same spreading code with the same carrier frequency to each receiver UE via each of direct links (Step S 190).
  • UEl sends UTRAN (via signaling link) and each receiver UE in multicast communication mode (via each direct link) an end multicast message, and releases corresponding radio resource (Step S200)
  • each receiver UE After receiving the end multicast message, each receiver UE release its occupied radio resource respectively (Step S210); UTRAN reclaims the radio resource for the multicast communication (Step S220).
  • the present invention is not limited to present embodiment, for example, the present invention not only applies to the multicast communication between a sender UE and multiple receiver UEs camped in a same cell, but also applies to the scenarios where sender UE and multiple receiver UEs are camping in different cells or are outside the cell's radio coverage.
  • the multicast method and apparatus for use in P2P-enabled wireless communication networks in the present invention when sender UE and multiple receiver UEs are close to each other, following P2P communication mode, traffic data can be conveyed via P2P communication direct links between sender UE and each of receiver UEs. Compared with the multicast communication based on conventional communication mode, this method can effectively save radio resource and reduce the traffic data transmission delay.
  • multicast communication can be performed under the control and support of UTRAN, and can enable UTRAN to maintain the control of radio resource.
  • the above multicast communication method is provided in the present invention by taking TD-SCDMA as an example, but the method can also be applicable to TDD SCDMA system.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de communication multidiffusion destiné à être exécuté par un système de réseau pour fonctionner dans un mode de communication entre entités homologues (P2P), ce consistant : à recevoir une demande multidiffusion d'un équipement utilisateur de l'expéditeur, qui contient des informations d'identification de plusieurs équipements utilisateur du destinataire ; à déterminer si la liaison directe de communication P2P entre l'équipement utilisateur de l'expéditeur et chacun des équipements utilisateur du destinataire réunit les conditions pour établir une communication multidiffusion, conformément à la demande de multidiffusion ; à attribuer une ressource radio correspondant à l'équipement utilisateur de l'expéditeur et à chaque équipement utilisateur du destinataire si les conditions pour établir une communication multidiffusion sont réunies, de sorte que chaque équipement utilisateur du destinataire puisse recevoir les données de données de trafic de l'équipement utilisateur de l'expéditeur.
PCT/IB2006/050070 2005-01-12 2006-01-09 Procede et appareil de communication multidiffusion dans des reseaux de communication sans fil WO2006075277A1 (fr)

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CN200510003923 2005-01-12

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Cited By (11)

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WO2008025285A1 (fr) * 2006-08-31 2008-03-06 Huawei Technologies Co., Ltd. Procédé et dispositif pour obtenir un service de multidiffusion avec des types multiples de protection et de récupération
WO2009009394A1 (fr) * 2007-07-10 2009-01-15 Qualcomm Incorporated Radiomessagerie dans un réseau pair à pair
WO2009009687A3 (fr) * 2007-07-10 2009-03-05 Qualcomm Inc Procédés et appareils pour supporter des communications de diffusion dans un réseau poste à poste
US7961698B2 (en) 2007-07-10 2011-06-14 Qualcomm Incorporated Methods and apparatus for controlling interference to broadcast signaling in a peer to peer network
WO2013010443A1 (fr) * 2011-07-19 2013-01-24 中兴通讯股份有限公司 Procédé et dispositif pour réaliser un service de diffusion groupée
WO2013139819A1 (fr) * 2012-03-20 2013-09-26 Nokia Siemens Networks Oy Appel de groupe vocal amélioré de dispositif à dispositif
US8582593B2 (en) 2009-12-29 2013-11-12 Nokia Corporation Multicast transmission within a hybrid direct and cellular communication system
US8694662B2 (en) 2007-07-10 2014-04-08 Qualcomm Incorporated Method and apparatus for communicating transmission requests to members of a group and/or making group related transmission decisions
US8861418B2 (en) 2007-07-10 2014-10-14 Qualcomm Incorporated Methods and apparatus for supporting group communications with data re-transmission support
JP2016506176A (ja) * 2012-12-28 2016-02-25 コニンクリーケ・ケイピーエヌ・ナムローゼ・フェンノートシャップ 多重事業者デバイス間マルチキャスティングまたはブロードキャスティング通信
WO2017178014A1 (fr) * 2016-04-11 2017-10-19 Telefónica Germany GmbH & Co. OHG Dispositifs, procédés et programmes informatiques pour émetteur-récepteur de station de base et pour émetteur-récepteur mobile

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Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8098576B2 (en) 2006-08-31 2012-01-17 Huawei Technologies Co., Ltd. Method and apparatus for providing a multicast service with multiple types of protection and recovery
WO2008025285A1 (fr) * 2006-08-31 2008-03-06 Huawei Technologies Co., Ltd. Procédé et dispositif pour obtenir un service de multidiffusion avec des types multiples de protection et de récupération
US8495232B2 (en) 2007-07-10 2013-07-23 Qualcomm Incorporated Methods and apparatus for supporting broadcast communications in a peer to peer network
US7961698B2 (en) 2007-07-10 2011-06-14 Qualcomm Incorporated Methods and apparatus for controlling interference to broadcast signaling in a peer to peer network
WO2009009687A3 (fr) * 2007-07-10 2009-03-05 Qualcomm Inc Procédés et appareils pour supporter des communications de diffusion dans un réseau poste à poste
WO2009009394A1 (fr) * 2007-07-10 2009-01-15 Qualcomm Incorporated Radiomessagerie dans un réseau pair à pair
US8521194B2 (en) 2007-07-10 2013-08-27 Qualcomm Incorporated Performing paging in a wireless peer-to-peer network
US8694662B2 (en) 2007-07-10 2014-04-08 Qualcomm Incorporated Method and apparatus for communicating transmission requests to members of a group and/or making group related transmission decisions
US8724609B2 (en) 2007-07-10 2014-05-13 Qualcomm Incorporated Methods and apparatus for controlling interference to broadcast signaling in a peer to peer network
US8861418B2 (en) 2007-07-10 2014-10-14 Qualcomm Incorporated Methods and apparatus for supporting group communications with data re-transmission support
US8582593B2 (en) 2009-12-29 2013-11-12 Nokia Corporation Multicast transmission within a hybrid direct and cellular communication system
WO2013010443A1 (fr) * 2011-07-19 2013-01-24 中兴通讯股份有限公司 Procédé et dispositif pour réaliser un service de diffusion groupée
WO2013139819A1 (fr) * 2012-03-20 2013-09-26 Nokia Siemens Networks Oy Appel de groupe vocal amélioré de dispositif à dispositif
JP2016506176A (ja) * 2012-12-28 2016-02-25 コニンクリーケ・ケイピーエヌ・ナムローゼ・フェンノートシャップ 多重事業者デバイス間マルチキャスティングまたはブロードキャスティング通信
WO2017178014A1 (fr) * 2016-04-11 2017-10-19 Telefónica Germany GmbH & Co. OHG Dispositifs, procédés et programmes informatiques pour émetteur-récepteur de station de base et pour émetteur-récepteur mobile

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